CN201935762U - Pneumatic detection device for pressure of storage battery polar group - Google Patents

Abstract

The utility model discloses a pneumatic detection device for battery pole group pressure, which comprises a base, a column standing vertically on the central part of the base, a cylinder fixed by an upper fixing plate and a lower fixing plate provided in the middle of the vertical surface of the column, and the lower part of the cylinder The piston end is connected with a pressure plate parallel to the base, two guide posts are arranged vertically at both ends of the press plate, and guide bushings are fixed at the corresponding positions between the two ends of the lower fixing plate and the guide posts, and the guide posts are embedded in the guide bushings, and Make up and down linear motion; the upper and lower inlets of the solenoid valve are respectively connected to the upper and lower inlets of the cylinder, and the solenoid valve is controlled by the switch on the control panel; in the pipeline formed by the lower inlet of the solenoid valve and the upper inlet of the cylinder , an electromagnetic shut-off valve and a barometer are connected in series, a magnetic sensor is installed on the cylinder body of the cylinder, and the intermediate relay accepts the instructions of the sensor to control the action of the electromagnetic shut-off valve. Through the implementation of the utility model, it can avoid that the positive active material expands and easily falls off during the charging and discharging process due to too small assembly pressure, damages the polar plate and bulges the battery shell due to excessive assembly pressure, and the acid and colloid are not easy to penetrate The phenomenon at the bottom of the battery ensures stable and reliable performance of the battery.

Description

A pneumatic detection device for battery pole group pressure

technical field

The utility model relates to a detection device, in particular to a detection device for the pressure of the battery pole group.

Background technique

With the rapid development of battery products in our country, during the battery manufacturing process, especially in the process of manually lowering the pole group, the assembly pressure of the pole group directly affects the performance of the battery, because the active material on the plate plate is directly Adsorbed on the grid ribs, the active material continues to expand during the charging and discharging process of the battery, and due to the action of gravity, the active material must fall off, which makes the separator paper between the positive and negative plates must have a certain tension , tightly pressing the active substance so that it is not easy to fall off. If the assembly pressure of the separator paper is too high, although it plays a great role in the shedding of the active material, it may easily damage the plate and burst the battery case, and if the AGM separator is pressed tightly, it will cause internal damage. The density is high, the relative acid absorption is reduced, and the acid and colloid are not easy to penetrate the bottom of the battery, thus affecting the performance of the battery. In addition, usually the thickness of the separator paper is the thickness under the theoretical assembly pressure calculated according to the empirical value, but there is a certain deviation between the thickness of the plate obtained by the actual smear and the theoretical value, which makes the assembly pressure and the standard value Therefore, how to accurately measure the assembly pressure of the battery pole group plays a crucial role in the assembly of the battery, and it is imperative to invent a device that can measure the assembly pressure of the battery. must do.

Contents of the invention

The purpose of this utility model is to provide a pneumatic detection device for battery pole group pressure, which can accurately measure the assembly pressure of the battery, so as to solve the problem of positive active material in the charging and discharging process caused by the excessive or too small assembly pressure in the prior art. Swelling is easy to fall off, damage the plate and burst the battery shell, acid and colloid are not easy to penetrate the bottom of the battery and affect the performance of the battery.

The utility model is realized through the following technical solutions:

A pneumatic detection device for battery pole group pressure, comprising a base, a column standing vertically on the central part of the base, the cylinder is fixed by an upper fixing plate and a lower fixing plate provided in the middle of the vertical surface of the column, and the piston end of the lower part of the cylinder is connected with a A pressure plate arranged parallel to the base, two guide pillars are vertically arranged at both ends of the pressure plate, and guide bushings are fixed at the corresponding positions between the two ends of the lower fixing plate and the guide pillars, and the guide pillars are embedded in the guide bushings, and move linearly up and down; The upper and lower inlets of the solenoid valve are respectively connected to the upper and lower inlets of the cylinder, and the solenoid valve is controlled by the switch on the control panel; in the pipeline formed by the lower inlet of the solenoid valve and the upper inlet of the cylinder, a solenoid valve is connected in series. The stop valve and the air pressure gauge are equipped with a magnetic sensor on the cylinder block, and the intermediate relay accepts the instructions of the sensor to control the action of the electromagnetic stop valve.

The preferred technical scheme of the utility model is:

In the above-mentioned pneumatic detection device for battery pole group pressure, the solenoid valve is further provided with an intermediate air inlet, which is connected to the air source governor. The pressing plate is formed by stacking multi-layer plates, and the thickness of the pressing plate can be adjusted by reducing the number of laminates.

Compared with the prior art, the utility model has the following obvious advantages:

Because the utility model controls the movement of the electromagnetic valve through the control panel switch, and an electromagnetic stop valve and a barometer are connected in series between the pipeline formed by the electromagnetic valve and the cylinder, and the cylinder is equipped with a sensor, when the cylinder piston moves forward When it runs to the position of the sensor, it can send an instruction to the intermediate relay to control the action of the electromagnetic cut-off valve to stop the cylinder. At this time, the assembly pressure of the battery pole group can be accurately converted through the display value of the barometer. Through the operation of the utility model, the assembly pressure of the battery pole group can be detected, which can avoid the expansion and easy falling of the positive active material during the charging and discharging process caused by too small assembly pressure, and the damage of the plate and swelling caused by the excessive assembly pressure. The phenomenon of broken battery shell, acid and colloid not easy to penetrate the bottom of the battery ensures stable and reliable performance of the battery.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

As shown in Figure 1, a pneumatic detection device for battery pole group pressure, the base 1 is set horizontally, the column 2 stands vertically at the center of the base 1, and the upper fixing plate 9 and the lower fixing plate 6 are arranged in the middle of the vertical surface of the column 2 , the cylinder 7 can be fixed by these two fixing plates.

A pressure plate 3 parallel to the base 1 is connected to the end of the piston rod at the bottom of the cylinder 7. Two guide posts 4 are arranged vertically at both ends of the press plate 3, and guide posts are fixed at the corresponding positions of the two ends of the lower fixing plate 6 and the guide posts 4. The shaft sleeve 5 and the guide post 4 are embedded in the guide shaft sleeve 5, and move linearly up and down. The pressing plate 3 is formed by stacking multi-layer boards, and the thickness can be adjusted by reducing the number of laminates.

Electromagnetic valve 14 is provided with upper and lower two air inlets, communicates with the upper and lower air inlets of cylinder 7 respectively, and electromagnetic valve 14 is controlled by control panel switch 11.

In the pipeline formed by the lower inlet of the solenoid valve 14 and the upper inlet of the cylinder, an electromagnetic shut-off valve 13 and a barometer 10 are connected in series, and the cylinder 7 is equipped with a magnetic sensor 8 (in this embodiment, the model of the sensor 8 : CS1-F), the intermediate relay 12 accepts the command of the sensor 8, and controls the electromagnetic shut-off valve 13 to act.

The electromagnetic valve 14 is also provided with an intermediate air inlet 143, which is connected with the air source governor to adjust the air intake speed of the cylinder 7.

The utility model principle and working steps are:

1. Put the electrode group 15 to be tested in the middle of the base;

2. Turn on the power, start the control panel switch 11 contact switch A to turn on the power, the solenoid valve is energized, and the air cylinder moves forward;

3. When the cylinder piston moves forward to the position of the sensor, the sensor energizes the intermediate relay, so that the electromagnetic cut-off valve is energized to close the intake air, and the cylinder stops moving (at this time, the value of the barometer is the pressure in the cylinder, according to F _cylinder = F _{pole group} , and because F _cylinder = P _meter ·S _cylinder , S _cylinder refers to the force-bearing area of the piston of the cylinder, which can be calculated according to the inner diameter of the cylinder, and the actual pressure of the pole group can be quickly calculated according to the barometer value measured each time );

5. Start the control panel switch 11 contact switch B to turn off the power, and the cylinder will return at this time;

6. Repeat the above steps before measuring, adjust the distance from the pressure plate to the base when the cylinder stops according to the distance from the original expansion distance to the final expansion of the pole group, and then adjust the position of the sensor on the cylinder;

7. If the air intake speed of the cylinder is too fast or too slow, it can be adjusted by adjusting the air source governor;

8. If there is a deviation between the actual pressure value and the standard pressure value, it can be adjusted by adjusting the thickness of the pressure plate to meet the standard requirements.

Claims (3)

1. accumulator pole group pressure PCU, it is characterized in that: this device comprises base (1), column (2) vertically stands on the centre of base (1), the upper mounted plate (9) and the bottom plate (6) that are provided with in the middle part of the facade of cylinder (7) by column (2) are fixed, cylinder (7) lower piston end is connected with the pressing plate (3) that be arranged in parallel with base (1), pressing plate (3) two ends are vertically installed with two guide pillars (4) respectively, correspondence position at bottom plate (6) two ends and guide pillar (4) is fixed with guideway (5), guide pillar (4) embeds in the guideway (5), and makes rectilinear motion up and down; In the formed pipeline of last air intake opening of following air intake opening of solenoid valve (14) and cylinder (7), be serially connected with electromagnet cut off valve (13) and rain glass (10), be equipped with magnetic sensor (8) on cylinder (7) cylinder body, auxiliary reclay (12) is accepted the instruction of sensor (8), the action of control electromagnet cut off valve (13).

2. a kind of accumulator pole group pressure PCU according to claim 1 is characterized in that: air intake opening (143) in the middle of solenoid valve (14) is provided with, this centre air intake opening (143) is connected with the source of the gas speed regulator.

3. a kind of accumulator pole group pressure PCU according to claim 1 and 2 is characterized in that: pressing plate (3) can be by the thickness of regulating pressing plate (3) of deleting of number of laminae for multilayer board is built up.

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